[Serusers] Mediaproxy

[Greger V. Teigre]

This is not a function of mediaproxy (or rtpproxy), but rather the 
configuration of your ser.cfg. You can do these things to reduce the 
proxying:
- Use devices that are deployed outside the NAT (adapters with WAN/LAN)
- If you trust your UAC's STUN implementation, use STUN (all but symmetric 
NATs and firewalls with ports closed should work)
- Detect UACs behind the same NAT and avoid proxying (discussion on this 
list multiple times)
- Use fix_nated_sdp() to set direction=active when sending an INVITE to a GW 
from a UAC behind symmetric NAT
- Use fix_nated_sdp() to set direction=active when sending the OK from the 
UAC behind symmetric NAT to the GW

The two last are dependent on the GW supporting active media. Also, this 
approach will work for UACs on public IPs that also support active media 
(not many, I believe).
g-)

Alberto wrote:
> I have a doubt about Mediaproxy.
> I've read, if one o more SIP clients are behind NAT the traffic RTP,
> all the traffic, it will cross the
> server (ser and mediaproxy same server). I have verified it.
>
> Is There some way that is not thus? Or it is the only form to work the
> Mediaproxy (always to be and mediaproxy same server).
>
> Thanks,